<template>
  <div class="about">
    <h1>{{ id ? '编辑' : '新建'}}广告位</h1>
    <el-form label-width="120px" @submit.native.prevent="save">
      <el-form-item  label="名称">
        <el-input v-model="model.name" placeholder="请输入名称"></el-input>
      </el-form-item>
      <el-form-item label="广告位">
        <el-button size="small" @click="model.items.push({})"><i class="el-icon-plus"></i>添加广告</el-button>
        <el-row type="flex" style="flex-wrap:wrap">
          <el-col :md="18" v-for="(item,index) in model.items" :key="index">
            <el-form-item label="URL跳转链接">
              <el-input v-model="item.url" placeholder="请输入名称"></el-input>
            </el-form-item>
            <el-form-item label="图片" style="margin-top: 0.5rem;">
               <el-upload
                class="avatar-uploader"
                :action="$http.defaults.baseURL + '/upload'"
                :show-file-list="false"
                :on-success="res => $set(item,'image',res.url)">
                <img v-if="item.image" :src="item.image" class="avatar">
                <i v-else class="el-icon-plus avatar-uploader-icon"></i>
              </el-upload>
            </el-form-item>
            <el-form-item>
              <el-button type="danger" size="small" @click="model.items.splice(index,1)">
                删除
              </el-button>
            </el-form-item>
          </el-col>
          </el-row>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" native-type="submit">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
export default {
  props : {
    id : {}
  },
  data (){
    return {
      model : {
        items : []
      },
    }
  },
  methods : {
    async save() {
      let res
      if(this.id)
      {
        res = await this.$http.put(`rest/ads/${this.id}`,this.model)
      }else{
        res = await this.$http.post('rest/ads',this.model)
      } 
      
      this.$router.push('/ads/list')
      this.$message({
        type : 'success',
        message : '保存成功'
      })
      
    },
    async fetch() {
      const res = await this.$http.get(`rest/ads/${this.id}`)
      this.model = Object.assign({},this.model,res.data)
    },
  },
  created() {
    this.id && this.fetch()
  },
}
</script>